India, Oct. 19 -- The US State Department has updated its travel guidance for Madagascar, issuing a Level 3 advisory that urges Americans to reconsider travel to the island nation amid rising crime, unrest, and political instability.

The advisory warns that protests and demonstrations have been breaking out across the country and can turn violent without warning. Officials caution that rioting, looting, vandalism, and property destruction have been reported during recent unrest.

"US citizens should stay in place and avoid areas with protests or demonstrations," the advisory states, adding that unrest can escalate quickly, especially after dark.

Authorities also noted a surge in violent crime, including armed robbery and assault, partic...